46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
#include<stdio.h>
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#include<string.h>
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#include<algorithm>
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#define MAXD 3010
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#define INF 0x3f3f3f3f
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int N, P, f[MAXD][MAXD], K[MAXD][MAXD], A[MAXD], a[MAXD];
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void init()
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{
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int i;
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scanf("%d%d", &N, &P);
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for(i = 1; i <= N; i ++) scanf("%d", &a[i]);
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std::sort(a + 1, a + 1 + N);
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for(i = 1, A[0] = 0; i <= N; i ++) A[i] = A[i - 1] + a[i];
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}
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int getw(int x, int y)
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{
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int t = x + y >> 1;
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return (t - x) * a[t] - A[t - 1] + A[x - 1] + A[y] - A[t] - (y - t) * a[t];
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}
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void solve()
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{
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int i, j, k, p, t;
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for(i = 0; i <= N; i ++) K[i][i] = i, f[i][i] = 0;
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for(p = 1; p <= N - P; p ++)
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{
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for(i = 0; (j = i + p) <= N; i ++) f[i][j] = INF;
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for(i = 1; (j = i + p) <= N; i ++)
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for(k = K[i][j - 1]; k <= K[i + 1][j]; k ++)
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if(f[i][j] > (t = f[i - 1][k - 1] + getw(k, j)))
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f[i][j] = t, K[i][j] = k;
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}
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printf("%d\n", f[P][N]);
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}
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int main()
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{
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int t;
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scanf("%d", &t);
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while(t --)
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{
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init();
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if(P >= N) printf("0\n");
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else solve();
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}
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return 0;
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}
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